Driving mechanism for shaking conveyers and the like



Jan. 5,1937. H. cREMER I 2,066,961 v DRIVING MECHANISM FOR SHAKING CONVEYERS AND THE LIKE Filed DSC. 6, 1934 5 Sheets-Sheet l /Uorrlcf 5f Jan. 5, 1937. v H, CREMER- 2,066,961

DRIVING MECHANISM FOR SHAKING CONVEYERS AND THE LIKE Filed Deo. e, 1954 5 sheets-sheet 2' H. CREMER DRIVING MECHANISM FOR SHAKING CONVEYERS AND THE LIKE Filed Dec. 6, 1934 5 Sheets-Sheet 3 .f n@ mm 2 3 H wm /c H .7 3 90u W lfm a 7% 0U .U o@ 3 I9 Tl. o OJ WH..

Jan. 5, 1937. H. CR'EMER 2,066,961

DRIVING MECHANISM FOR'SHAKING CONVEYERS AND THE LIKE Filed Dec. e, 1934 5 sheets-sheet 4 /m/enor Hans Cremer'. A Hrm?? .si

Jan. 5, 1937.- H. CREMER 2,066,961

DRIVING MECHANISM FOR SHAKIN-G CONVEYERS AND THE LIKE Filed Dec.` 6, 1954 5 Sheets-Sheet 5 TELIT 7f- 70 ,4 No 2014753 l Patented Jan. 5,v I l1937 PATENT OFFICE DRIVING MECHANISM FOR, SHARING CON- VEYERS AND THE LIKE Hans Cremer, Bochum, Germany, assigner to 4 Gebrueder Eickhoff, Maschinenfabrik und Eisengiesserei, Bochum, Germany Application December e, 1934, serial No. '156,322 In Germany October 6, 1934 V l 1s claims. (cl. iss-zzo) My invention relates toJshakng conveyers and has in particular reference to the means for driving such conveyers and to means for securing them on the iioor in xed position. l My invention has for one of its objects a drive for shaking conveyers in which a rotary motor, in particular an electric motor, is made use of and in which the point or points of application of the driving force are situated at a low'level 1o and symmetrically to the central line of the conveyer. These conditions areas yet not fullled inthe known electric'twin drives in which swing levers are provided on both sides as well as cranks and rods .which are applied below the 15 conveyer to the latter, whereby a. correspondingly high position of the'conveyer above the `floor is required on the point of application of these parts. In addition, delicate parts of the gear, viz. the cranks, lie freein the construction, 20 which is a drawback.

Now the drive for shaking conveyers according to .my invention, which is iltted with a rotary motor, is characterized by the feature. that the portion ofthe gear adjacent to the driv 215 ing motor comprises a member which determines the law of motion of the conveyer and is lodged in a casing portion situated beside the conveyer, and further, that the transmission of the motion of the motor to the conveyer `is estab- 30 lished by one or two cranks, in the latter case arranged as twin cranks, with coupling rods and A reciprocating rods. These parts are lodged in' a casingwhich is closed except one sole passage for the respective reciprocating rod. Such a 35 gear has at least partially a very small structural height, so that the conveyer itself can be disposedat a very low level above the lower portion of the casing. The described construction afiords the advantage that the parts of the gear 40' can be enclosed in a casing which, except the passages for the reciprocating rods, is entirely closed, the passages for the rods being packed by stuiiing boxes, so that no delicate articulated or rotary parts -exist outside the casing. As a 45 consequence of the described construction the member which determines the-law of motion of the conveyer maybe designed as a separate driving unit, which is of importancel for the drive of shaking conveyers of small structural 50 length. To this end this gear part together with the appartenant casing portion may b 'constructed so as to be detached from theremaining gear parts and casing portion, av suitable 'cover being provided for the surface of 55. separation.

Another object of the present invention resides in securing the gear mechanism to the floor and maintaining it without injury to the supporting structure of the individual gear parts.

Prior to the present invention, gear mecha- 5 nisms for shaking conveyers were usually secured to the oor by props which were wedged between the roof and the gear, its support orcasing so as to prem directly'onthese elements.

The wedging action oi the props, however; has

the tendency to distort these elements, to ail'ect the position of the gear parts relative to each other and to injure the entire mechanism. This disadvantage may be overcome by securing a separate elementviixedly to the iloor and connecting the gear mechanism thereto. l

Although some of the' above disadvantages are overcome by this procedure, other distorting movements are transmitted to the gear and its casing, which are caused by the leverage. arising between the point where the props engage the securing element and the place where the conveyei` is connected to the gear. 'Ihese movements easily cause the operators of vthe con-i' `ibayer to secure the gear casing not only indirectly by means of the securing element, but also directly by props. 4

It is therefore another object of the invention to connect the securing element rigidly with the gear casing at least substantially aligned with the coupling member connecting the gear with the conveyer, or at least substantially symmetrical relative to this member, or at least substantially at the same height as this member. By such a construction any leverage between the .gear and-thesecurlng element is substantially 'avoided so that the gear casing rests immovably on the iloor, although xed to the securing element only by means of the rigid connection, and any occasion for securing the gear casing direet- 4o ly also is avoided. Y Y A still further object resides in a light and easily movable construction. Since the gear casing is secured at least substantially without leverage, only that part of the casing needs to be reinforced which located between the point of engagement of the securing elements on the gea'r casing and the point where the coupling member connecting the gear with the conveyer engages the gear. Only within this area can 5o the gear casing be affected -by the conveying forces and this effect is considerably reduced according to the invention by arranging these points of engagement closely adjacent each other on the casing. All the other parts ci the gear ment the coupling member connecting the gear l with the conveyer may be guided also outside of the gear casing.

In order that my invention may be clearly understood and readily carried into eiect, some embodiments of the same are illustrated by way.

of example in the accompanying drawings, 1n which Figure 1 is an end view of the first embodiment of my new shaking conveyer drive,

Figure 2 is a top view thereof,

Figure 3 is an end view and Figure 4 a top view of a second embodiment,

Figure 5 is a sectional view of the third embodiment,

Figure 6 is a sectional top view thereof,

Figure '7 is a sectional view of the fourth modification,

Figure 8 is a' sectional top view thereof,

Figure 9 is a sectional view of a fifth modification,and Y Figure 10 is a diagrammatic side view thereto.

In the embodiment illustrated in Figures l'and 2 a rotary motor, e. g. an electric motor I is connected by intermediate spur Wheel gears 2, 3, 4, 5 to a pair of bevel wheels 6, 1 the horizontal wheel 1 having rigid to it an elliptic wheel 8 which is mounted above or below the former and revolves about one of its foci. This elliptic y wheel is in mesh with a horizontal companion elliptic Wheel -likewise revolving about one of its foci and having fast to it a crank I0 which by a rod II is connected to a reciprocating rod I2. The whole gear is enclosed in a casing g which has a comparatively :mall structural .height except its portion containing the gear parts 2, 3, 4, 5, since its remaining portion 'in' cludes only horizontally disposed spur wheels. Merely the reciprocating member I2 extends through the wall of the casing g and its passage opening is packed by means of a stuffing box (not shown). The outer end of the memberV I2 is connected with a movable bridge part of the conveyer mounting symmetrically about at the level of the bottom of the conveyer trough r. The bridge part 2l in its turn is rigidly connected to the trough r. The base plate 2l' of the mounting is connected by-rods 22v with the casing g so as to withstand draw -and buiing forces, the rods 22' preferably being disposed about at the level of the reciprocating rod` I2, so that the couples of forces on both sides acting on the casing are fully balanced and no external tilting moments' act upon the latter. If, further, the base plate 2l of the mounting is xed in position by means of foundation screws 23' or the like, then owing to said forces ing balanced no special fixation of the gear casing is required. 'I'his feature, in its turn, aifords the advantage, that the gear casing is not stressed by external distorting forces that would impair the correct mesh of the gear parts.

In the modified drive illustrated in Figires 3 and 4 the spur wheel gear 2 driven by the rotary motor I and intermediately connected with the spur wheels 3, 4, 5, the bevel wheels 6,1, the elliptic wheels I and 3, the crank Il. the rod II and the reciprocating member I2 are arranged in the same manner as in the drive shown in Figures 1 and 2. The elliptic wheel 9 has further rigid to it a spur wheel I3 which through intermediate wheels I4, I5 is in mesh with a spur wheel I6 in such a manner that no gearing up or down exists between the wheels I3 and I6 which thus revolve at the same rate of revolution. The spur wheel I6 has rigid to it a crank I1 which by a coupling rod I8 is in connection with a second reciprocating memberl 9. The whole gear is enclosed in a casing 9, y1, y the central portion g1 oi which, as it will be seen best in Figure 3, has a still somewhat smallei` structural height than the two side portions, so that the casing has a U- shaped sectional form. The central casing portion g1 has such a width that the conveyer may be disposed above this portion and, more particularly, in such a manner, that the upper edges of the trough lie at least approximately flush with the upper surface of the two lateral casing portions.

The connection-between the two sides of the described twin gear may be eiected further by one sole big spur wheel 24, as marked by a dot and dash circle in Figure 4, instead of by two or more intermediate spur wheels I4, I5. This would, however, not be so advantageous, since one sole spur wheel not only occupies more space than a couple of wheels, but also, further, by the provision of couples of wheels betweenl the two sides of the twin gear symmetrical opposite directions of revolution of the twocrank gears are obtained, which results in an adequate balance of `the masses and forces.

In the modified drive illustrated in Figures 5 and 6 the motion of the rotary motor I is transmitted to a horizontal crank shaft 36 by means of vertical spur wheels 3D, 3|, 32, 33 and a pair of vertical elliptic wheels 34, which each are mounted yfor rotation about one of their foci, 'I'hecrank shaft 36on its ends carries symmetrically arranged cranks 31 and 38, which overhang and transmit their motion through rods 39, 40 to reciprocating plungers 4I, 42 which like in the rst embodiment are connected to the movable bridge part 20 of the conveyer mounting. The base plate 2l is again fixed by means of props 43 and connected to the casing g, g1, g by connecting rods 44. As to be seen in Figure 3, also this casing has a central lower portion g1 above which the conveyer trough is arranged at a comparatively low level. As in the first embodiment the casing g, g1, g is entirely closed v and has only the two passages for the reciproleating plungers 4I, 42.

In the embodiment illustrated in Figures 7 and 8 the rotary motor I" transmits its motion through pairs of intermediate spur wheels 50, 5I and 52,153 to a. shaft 54 that carries an elliptic wheel 55 which turns about one of its foci and is in mesh with a similarly mounted elliptic wheel 56 which has rigid to it a spur wheel 51 and a 'crank 58. Spur wheel 51 is in mesh with a pinion 59 mounted on a quickly revolving intermediate shaft SII which is arranged at a low level and on its other end carries a pinion, 6I similar to pinion 59 and in mesh with aspur wheel 62 driving 'the other crank 63. 'I'he two cranks rest in the outer walls of the casing parts g. The reciprocating P plungers 64 and 65 tightlypass through the casing and are connected by rods 66 with the movable bridge part 20 of the conveyer mounting. The base plate 2l of the latter is connected to the casing parts y, y by rods 61. 'Ihe central por- 2, is subdivideddvertically in such a manner, that the casing portion, which is adjacent to the driving motor and encloses the gear vpart determining the law of motion of the conveyer'and the one crank 'and reciprocating rod, is separated from the remaining casing portion and the gear parts therein and, when separated, can be closed by a lateral cover. Consequently, in all embodiments, the gear part that prescribes the law of motion of the conveyer may be used together with the motor as a conveyer driving unit in connection with any other conveyer.

In'lieu of using a pair of elliptic spur wheels in order to obtain a favorable law of motion of the conveyer other suitable means may be employed elliptic wheel which is in mesh with an eccentric circular wheel, with an average ratio of transmission of 2:1, or toggle wheel gears. Figures 9 and 10 show a gear of this latter type.

The intermediate shaft 14, which is driven by the intermediate wheels 10, 1I, 12, 13, has rigid to it a pinion 15 which through an intermediate wheel 16 drives an eccentrically mounted wheel 11. The distance between the centers of pinion 15 and intermediate wheel 16 is secured Yby two arms 18 swingingly mounted on the shaft 14 on both sides of pinion 15, while another pair of arms 19 secures the distance ofthe center of the intermediate wheel 16 from the center of the crank wheel i1. In this manner both pairs of arms 18, 19 are hingedly mounted on the inter- -mediate shaft. The eccentric wheel 11 has likewise rigid to it a crank pin 80 for the conveyer drive which, as to the rest, consists again of reciprocating 'plungers 8| etc. The eccentricity is marked byf e, Figure 10. It does not correspond as to its -length and position to the radius of the crank.

What I claim as my invention isz- 1. A drive -for a shaking conveyer, comprising a rotary motor, a gear, a crank actuated by said gear, a coupling rod connected to said crank and a reciprocating member connected to said coupling rod, a casing enclosing said gear and closed except an opening for said reciprocating inember, a conveyer base plate adapted to be iixed' in' position and connected to said casing so as to withstand draw and' buing forces, a -transverse bridge shiftable on' said base plate and carrying the conveyer trough and connected to said' reciprocating member.

2. A drive for a, shaking conveyer, comprising a rotary motor, a gear, spur wheels in engagement with said gear,a pair of elliptic wheels -driven by said spur wheels and each mounted for rotation about one of its foci, a crank driven from .ing for said one of saidnelliptic wheels, a coupling rod connected to said crank, a reciprocating member connected. to said coupling rod, ing said'crank gear and closed except an openreciprocating member, a conveyer base plate adapted to be fixed in position and ,connected to said casing so as to withstand draw and bufilng forces, a transverse bridge shiftable on said base .plate and carrying the conveyer trough and connected to said reciprocating member.

in all embodiments described, such as-an a casing enclosthe shaking conveyer, the drive further comprising another crank gear with reciprocating member arrangedsymmetrically with the rst-named crank gear and reciprocating member, intermediate gear members interconnecting said two crank gears and adapted to set them in opposite motion rotating in synchronous phase, and a casing enclosing said other gear parts and closed except an opening for said other reciprocating member, said casing being connected with the first-named casing. y l

4. A drive for a shaking conveyer, comprising a rotary motor, a gear, a crank actuated by said gear, a coupling rod connected to said crank and a reciprocating member connected to said coupling rod and to the conveyer trough, a casing enclosingsaid gear and closed except an opening for said reciprocating member; means interposed between said motor and said crank for producing a reciprocatory conveying, motion required for the shaking conveyer, the drive further comprising another crank gear with reciprocating member arranged symmetrically with the rst-named crank gear and reciprocating member, intermediate gear members interconnecting said two crank gears and adapted to set them in opposite motion rotating in synchronous phase, a casing enclosing said other gear parts and closed except an opening for said other reciprocating member, a wholly closed third casing enclosig said intermediate gear members and interconnecting said two other casings, said third casing` having a smaller structural height than the former and being of a width so as to permit the conveyer trough to be disposed above it and being approximately ilush with the upper edges of said two other casings.

5. A drive for a shaking conveyer, compris-` in g a rotary motor, a gear, a crank actuated by said gear, a coupling rod connected to said crank and a reciprocating member connected to said coupling rod, a casing enclosing said gear and closed except an opening for said reciprocating-A member, the drive further comprising another crank gear with reciprocating member arranged symmetrically with the first-named crank gear and reciprocating member, intermediate gear members` interconnecting said two crank gears and adapted to set them in opposite rotary motion, and a'casing enclosing said other gear parts and closed except an openingfor said other reciprocating member, said casing being connected with the first-named casing. a conveyer base plate adapted to bexed in position and connected to said casings so as to withstand draw and bufilng forces, a transverse bridge shiftable on said base plateand carrying the conveyer trough and connected to said two reciprocating members. j

6. A drive for' a shaking conveyer, comprising a rotary niotor, a gear, spur wheels in'engagement with saidv gear,l a pair of elliptic' wheels driven by said spur wheelsand each `mounted for rotation about one of from one of said elliptic connected to said crank, a reciprocating member its foci, a crank driven wheels, a coupling rodl connected to said coupling rod and to the conveyer-trough, and a casing enclosing said crank gear and closed except an opening for said reciprocating member, said drive further comprising another crank gear with reciprocating member arranged symmetrically with said ilrstnamed crank gear and reciprocating member,

intermediate gearing means interconnecting said .two crank gears and adapted to set them in opposite rotation, and another casing enclosing said other crank gear and member and closed except an opening for said reciprocating member, said other casing being detachably connected to said rst-named casing.

7. A drive for a shaking conveyer, comprising a rotary motor, a gear, spur wheels in engagement with said gear, a pair of elliptic wheels driven by said spur wheels and each mounted for rotation about one of its foci, a crank driven from one of said elliptic'wheels, a coupling rod connected to said crank, a reciprocating member connected to said coupling rod and a casing enclosing said crank gear and closed except an opening for said reciprocating member, said drive further comprising another crank gear with reciprocating member arranged symmetrically with said first-named crank gear and reciprocating member, intermediate gearing means interconnecting said two crank gears, and adapted to set them in opposite rotation, and another casin g enclosingsaid other crank gear and rod and closed except an opening for said reciprocating member, said other casing being detachably connected to said first-named casing, a conveyer base plate adapted to be fixed in position and connected to said casings so as to withstand draw and buiiing forces, a transverse bridge shiftable on said base plate and carrying the conveyer trough and connected to said two reciprocating members.

8. A drive for a shaking conveyer according to claim 2 in which some of said spurwheels of said gear are arranged so as to revolve in a horizontal plane.

9. A drive for a shaking conveyer comprising a driving gear for producing a reciprocatory conveying motion, a casing, said gear being secured to said casing and enclosed thereby, means for coupling said gear to said conveyer so as to transmit the conveying motion to said conveyer, means for securing said casing comprising a member xedly secured to the ground and elements connecting said casing to said member and exerting a force substantially parallel with, and in the same plane transverse to the longitudinal vertical plane of the conveyer as, the force exerted by said'coupling means on the gear, so as to withstand draw and buling forces between said gear, said casing, and said member.

10. A drive for a. shaking conveyer comprising a driving mechanism for producing a 'reciprocatory conveying motion, means for Securing said mechanism comprising a. support for said conveyer xedly secured to the ground and elements connecting said mechanism to said support, means for coupling said mechanism to said conveyer so as to transmit the conveying motion to said conveyer, said coupling means being arranged intermediate said connecting elements so as to withstand draw and builng forces between said mechanism and said support.

11. A drive for a shaking'conveyer comprising a driving gear for producing a reciprocatory conveying motion, a casing, said gear being secured to said casing and enclosed thereby, means for coupling said gear to said conveyer so as to transmit the conveying motion to said conveyer, means for securing said casing comprising a support for said conveyer xedly secured to the ground and elements connecting said casing to said support and exerting a force substantially parallel with, and in the same plane transverse to the longitudinal vertical plane of said conveyer as, the force exerted by said coupling means on the gear, so as to withstand draw and bung forces between said gear, said casing, and said support.

12. A drive for a shaking conveyer comprising a driving mechanism for producing a reciprocatory conveying motion, means for securing said mechanism comprising a support for said conveyer xedly secured to the ground and elements connecting said mechanism to said support, means for coupling said mechanism to said conveyer so as to transmit the conveying motion to said conveyer, said coupling means being arranged intermediate said connecting elements, said elements being connected to said support at substantially the same level with said coupling means so as to withstand draw and hurling forces between said mechanism and said support.

13. A drive for a shaking conveyer according to claim 9 including a transverse bridge, said coupling means being connected to said bridge for transmitting the conveying motion thereto, a conveyer trough supported by said bridge, and means on said member for guiding said bridge.

14. A drive for a 'shaking conveyer according to claim 9, said driving mechanism comprising a driving gear, a pair of reciprocating members..

a pair of cranks, and a pair of connecting rods connecting said cranks with their corresponding reciprocating members each of said pairs being arranged symmetrically with respect to said conveyer, means intermediate said cranks connecting said cranks to each other, means for guiding said reciprocating members in straight direction and parallel to one another, and a casing completely enclosing said driving mechanism and having openings for the passage of said reciprocating members.

15. A drive for a shaking conveyer comprising a unit including a rotary motor, means for converting the rotary motion produced by said motor into a reciprocatory conveying motion including a crank gear actuated by said means, a reciprocating member connected to said crank gear, and means for guiding said reciprocating member in a straight direction, a second unit comprising a second crank gear similar to said first g'ear, means for transmitting the motion of vsaid first gear uniformly to said second gear, a

second reciprocating member connected to said second crank gear, and means for guiding said second reciprocating member in a straight direction and parallel to said rst reciprocating mem'- ber, a casing enclosing each of said units, each casing having an opening at one side for con`- necting said transmitting means to said rst crank gear and means for sealing said casings together when said two units are used together, and means for closing the opening in the casing of said rst unit when said iirst unit is to be used individually, each of said casings having another opening for the passage of said recipl'oeating members.

16. A drive for a shaking conveyer including a driving gear, a crank, a driven gear connected to but mounted eccentrically with respect to the axis of rotation of said crank, and an intermediate gear connecting said driving with said driven gear, said intermediate gear being hingedly secured to the shafts of both said driving and driven gears. A

17. A drive for a shaking conveyer comprising a driving mechanism for producing a'reciprocatory7 conveying motion, Vmeans for securing said mechanism comprising a support for said conveyer iixedly secured to the ground and elements connecting said mechanism to said support, means for coupling said mechanism to said conveyer so as to transmit the conveying motion to said conveyer, said coupling means being arranged intermediate said connecting elements. said connecting elements being arranged relative to each other so that the forces exerted by said connecting means on said mechanism in vertical planes are in equilibrium.

18. A drive for a shaking conveyer comprising `a driving mechanism for producing reciprocatory conveying motion, means for securing said mechanism comprising a support forsaid conveyer xedly secured to the ground and elements connecting said mechanisml to said support,

means for coupling said mechanism to said con- .veyer so as to transmit the conveying motion to 'said conveyer, said coupling means being arranged intermediate said connecting elements,

said connecting elements being arranged relative to each other so that the forces exerted by said connecting means on said mechanism in horizontal planes are in equilibrium.

19. A drive for a shaking conveyer comprising a driving gear-for producing a reciprocatory conveying motion, a casing, said gear being secured to said casing and enclosed thereby, means for securing said casing comprising a. support for said conveyer iixedly secured to the ground and elements' connecting said casing to said support,

means for coupling said gear to said conveyer so 

